“As I expected, his reply was typewritten” [IDEN] While handwriting was and is distinctive enough for a detective like Sherlock Holmes to draw some inferences, typography isn't quite so forgiving. Whether it was through fonts used in newspapers or flourishes of individual typewriters ("the fourteen other characteristics to which I have alluded are there as well." [IDEN]), Holmes was able to wring more out of typography than the average investigator.